[CANCEL][VOTE] Release pyignite 0.5.0-rc0

[Ivan Daschinsky-2]

This vote was canceled since it was decided to add [1] to the release.
[1] has been already merged to master branch and cherrypicked to
release branch. New vote will be created soon.

[1]  -- https://issues.apache.org/jira/browse/IGNITE-14911